Some of these are done already, but I'm hoping to introduce proper filtering with the next round of updates, and am waiting for Samsung to finish updating more of their Galaxy S phones to 2.2. If this goes on too long I'll just go ahead and push new updates out.
Crossed out stuff is done!
- Hearts: Additional styles of touch hearts, allow you to specify a custom image? - Aquarium:Jellyfish, more fish varieties (Lionfish!) - Clouds: UFO sightings! (Behavior & Art) Show up when battery is low! - Flames: Add (optional) smoke - Friendly Bugs: More butterflies, 'never' butterfly frequency - Thunderstorm:Lightning lines up with where you tap